Andrew bought 3 baseball cards for $240. after a few months, he got an offer from his friend jack to buy the first card for double its original value, along with either the second or third card. andrew decided to sell the first card (at double its original value) along with the second card (at its original price) and got $320 for it. or, selling the first card (at double its original value) card along with the third card (at its original price) would have only got him $280. what were the original prices for each of the 3 baseball cards?

n

step-by-step explanation:

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.